FIRE math: your 'number' is roughly 25× your annual spending (the 4% rule). The calculator below shows the capital your monthly income goal needs, and — with what you invest each month — how many years until you get there. Lower your burn or raise your savings rate and the years drop fast.
Get the Passive Income Tracker — $9 →FIRE number ≈ annual spending × 25 (a 4% safe withdrawal). For $40,000/yr spending, that's $1,000,000. Set your monthly goal below and it back-solves the capital.